penny123
contestada

The measures of two sides of a triangle are 7.3 centimeters and 2.94 centimeters. The triangle's perimeter is 14.8 centimeters.

Which equation could not be used to find the length of the third side?

1. 7.3 + 2.94 + x = 14.8

2. 14.8 = x + 10.24

3. 14.8 - x = 7.3 + 2.94

4. x - 14.8 = 2.94 + 7.3

Respuesta :

4. x - 14.8 = 2.94 + 7.3

Please give Brainliest :)
altavistard
The perimeter is 14.8 cm, and this equals the sum of the known two side lengths plus x, the length of the third side:

14.8 cm = (7.3 cm + 2.94 cm) + x
14.8 cm = 10.24 + x
    4.56 cm     = x

#1 is fine.
#2 is fine.
#3 is fine.
#4 makes no sense.  x would come out as larger than the given perimeter, which is not possible.

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